{
  "affected": [
    {
      "affectedData": [
        {
          "product": "nanomq",
          "vendor": "nanomq",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.24.10"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:emqx:nanomq:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "FE31E670-F1FF-49F4-8937-96E87F9DAC1F",
              "versionEndExcluding": "0.24.10",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform. Prior to version 0.24.10, in NanoMQ\u0027s webhook_inproc.c, the hook_work_cb() function processes nng messages by parsing the message body with cJSON_Parse(body). The body is obtained from nng_msg_body(msg), which is a binary buffer without a guaranteed null terminator. This leads to an out-of-bounds read (OOB read) as cJSON_Parse reads until it finds a \\0, potentially accessing memory beyond the allocated buffer (e.g., nng_msg metadata or adjacent heap/stack). The issue is often masked by nng\u0027s allocation padding (extra 32 bytes of zeros for non-power-of-two sizes \u003c1024 or non-aligned). The overflow is reliably triggered when the JSON payload length is a power-of-two \u003e=1024 (no padding added). This issue has been patched in version 0.24.10."
    },
    {
      "lang": "es",
      "value": "NanoMQ MQTT Broker (NanoMQ) es una Plataforma de Mensajer\u00eda de Borde integral. Antes de la versi\u00f3n 0.24.10, en webhook_inproc.c de NanoMQ, la funci\u00f3n hook_work_cb() procesa mensajes nng analizando el cuerpo del mensaje con cJSON_Parse(body). El cuerpo se obtiene de nng_msg_body(msg), que es un b\u00fafer binario sin un terminador nulo garantizado. Esto conduce a una lectura fuera de l\u00edmites (OOB read) ya que cJSON_Parse lee hasta que encuentra un \\0, accediendo potencialmente a memoria m\u00e1s all\u00e1 del b\u00fafer asignado (por ejemplo, metadatos de nng_msg o heap/stack adyacente). El problema a menudo est\u00e1 enmascarado por el relleno de asignaci\u00f3n de nng (32 bytes adicionales de ceros para tama\u00f1os que no son potencias de dos \u003c1024 o no alineados). El desbordamiento se activa de forma fiable cuando la longitud de la carga \u00fatil JSON es una potencia de dos \u003e=1024 (sin relleno a\u00f1adido). Este problema ha sido parcheado en la versi\u00f3n 0.24.10."
    }
  ],
  "id": "CVE-2026-34608",
  "lastModified": "2026-07-24T21:10:00.143",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 4.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.2,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.2,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 4.2,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-34608",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-04-02T19:10:50.684727Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-04-02T18:16:32.357",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/nanomq/nanomq/commit/9499a4b2c47998a6aadb69238c18b9e6771b1691"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Product",
        "Release Notes"
      ],
      "url": "https://github.com/nanomq/nanomq/releases/tag/0.24.10"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Mitigation",
        "Vendor Advisory"
      ],
      "url": "https://github.com/nanomq/nanomq/security/advisories/GHSA-8p57-jxj9-3qq3"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        },
        {
          "lang": "en",
          "value": "CWE-457"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}